Arrma Big Rock 4X4 3S Sealed Bearing Kit
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(2) 5X8X2.5
(4) 6x12x4
(8) 12x18x4
(7) 10x15x4
(4) 5x10x4
(1) 15x21x4
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You are purchasing the bearing listed above.
In many cases the bearing sizes may change depending on your particular model and the date that it was manufactured as well as different hop ups you may have installed. PLEASE DOUBLE CHECK your R/C before ordering to make sure you get all the proper bearings.